A grocer wishes to mix 6 pounds of Chippy dog food worth $3 per pound
with Hippy dog food, worth $4 per pound. How much of the Hippy dog
food should be mixed if the dog food mixture is to sell for $3.20?

A man stands in the center of a circle. On the circumference is a
tiger that can only move around the circle. The tiger can run four
times as fast as the man. How can the man escape the circle without
being eaten by the tiger?

How can I estimate how many chairs can be placed in the seating area of a
convention center meeting room that is 80 feet across at the front, 120
feet across at the rear, and 150 feet from front to back?

A tank is filled by two pipes. The smaller pipe alone will take 24
minutes longer than the larger pipe and 32 minutes longer than when
booth pipes are used. How long will each pipe take to fill the tank
alone?

Trivia took some fishbowls to a flea market. In the first hour she sold
one-third of them and a third more; in the second hour, she sold half of
them and a half more; in the third hour she sold one-third and a third of
one more; the next hour she sold half and half of one more; finally, she
sold the last two. How many fishbowls did Trivia sell?